Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 17 of 17 for “"Turbulence flow"”.
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Tip Leakage Flow Downstream a Compressor Cascade with Moving End Wall
… between the blade tips and casing upon the flow. Detailed 4-sensor hot wire measurements were made at various locations downstream the cascade. The results are presented in term of mean flow field and turbulence flow field. In order to reveal the effects of moving end wall, the results also …
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Numerical Investigation of turbulent coupling boundary layer of air-water interaction flow
Air-water interaction flow between two parallel flat plates, known as Couette flow, is simulated by direct numerical simulation. The two flowing fluids are coupled through continuity of velocity and shear stress condition across the interface. Pseudo-spectral method is used in each flow subdomain …
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Influence of Turbulence on the Aerodynamics of Low-Rise Buildings
… buildings with consideration of the effects of turbulence (terrain). Pressure measurements, as well as wind speed data, were taken at the Boundary Layer Wind Tunnel Laboratory (BLWTL) of the University of Western Ontario (UWO) to examine the influence of turbulence level (i.e., terrain …
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Combustion efficiency improvement in a rotary furnance using a post combustion chamber
… the fuel-air ratio and the size of the PCC. The flow characteristic results obtained, for the case of PCC and no PCC incorporated were contrasted. Flow characteristics were looked at in the wake of combustion,focusing on convection, temperature distribution, conduction, and radiative heat …
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Combustion efficiency improvement in a rotary furnance using a post combustion chamber
… the fuel-air ratio and the size of the PCC. The flow characteristic results obtained, for the case of PCC and no PCC incorporated were contrasted. Flow characteristics were looked at in the wake of combustion,focusing on convection, temperature distribution, conduction, and radiative heat …
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CFD modelling and validation of a large 2-stroke marine diesel engine
… engine and the corresponding numerical models as turbulence, injection, evaporation and chemical combustion, it has become realisable to investigate the whole working processes using Computational Fluid Dynamics (CFD). However, CFD itself needs to be validated to produce reliable results. The …
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Multi-scale Coherent Structure Extraction and Visualization for Flow Analysis
… structures are important features in fluid flows. A better understanding of the physics of coherent structures will help explain a diverse range of physical phenomena and help improve our capability of modeling complex turbulence flows, such as those often seen in combustion, chemical …
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Combustion of fine magnesium particles
… in laminar flames as well as in the flames with turbulence induced by a swirling air flow. Particle emission was well detectable above the flame emission background and emission pulses for individual particles were recorded using an array of three filtered photomultiplier tubes. Particle size …
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Effects of High Intensity, Large-Scale Freestream Combustor Turbulence On Heat Transfer in Transonic Turbine Blades
The influence of freestream turbulence representative of the flow downstream of a modern gas turbine combustor and first stage vane on turbine blade heat transfer has been measured and analytically modeled in a linear, transonic turbine cascade. Measurements were performed on a high turning, …
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Improved Desiccant Coatings for Heat and Water Vapour Transfer on the Matrix Surfaces of Air-To-Air Regenerative Wheels
… that can increase the likelihood of turbulent flow, and therefore, increasing the overall mass transfer rates. The industrial desiccant coating process involves submerging the desiccant into a coating agent and then applying this mix to the substrate or the matrix of the energy wheel. This …
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Elliptic Aerofoil aerodynamics in a developed PIV facility
… facility to obtain a physical description of the flow behaviour around and behind the aerofoil was one of the main milestones throughout this research. A new nozzle profile was designed for this specific purpose and an extensive study that verified its good performance was conducted. CFD results …
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Analytical and Numerical Models for Velocity Profile in Vegetated Open-Channel Flows
The presence of vegetation in open channel flow has a significant influence on flow resistance, turbulence structures and sediment transport. This study will evaluate flow resistance and scale velocity profile in depth limited flow conditions, specifically investigating the impact of vegetation on …
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Analytical and Numerical Models for Velocity Profile in Vegetated Open-Channel Flows
The presence of vegetation in open channel flow has a significant influence on flow resistance, turbulence structures and sediment transport. This study will evaluate flow resistance and scale velocity profile in depth limited flow conditions, specifically investigating the impact of vegetation on …
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Analytical and Numerical Models for Velocity Profile in Vegetated Open-Channel Flows
The presence of vegetation in open channel flow has a significant influence on flow resistance, turbulence structures and sediment transport. This study will evaluate flow resistance and scale velocity profile in depth limited flow conditions, specifically investigating the impact of vegetation on …
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Analytical and Numerical Models for Velocity Profile in Vegetated Open-Channel Flows
The presence of vegetation in open channel flow has a significant influence on flow resistance, turbulence structures and sediment transport. This study will evaluate flow resistance and scale velocity profile in depth limited flow conditions, specifically investigating the impact of vegetation on …
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Velocity and Turbulence Characteristics in Flows Through Rigid Vegetation
… were conducted to investigate the velocity and turbulence characteristics in flows through rigid vegetation. The vegetation was simulated by an array of acrylic dowels mounted to the bed of a recirculating hydraulic flume. Velocity measurements were taken in both the longitudinal and vertical …
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The turbulence structure of trailing vortex wakes
… investigation is a two-part study of the mean flow and turbulence structure of isolated vortices and counter-rotating vortex pairs. In the first part, the turbulence structure of an isolated vortex was studied using three-component velocity measurements. Vortices were generated using two …